Pipe-coupling.



No. 793,807. PATENTED JULY 4, 1905. G. A. SEAMAN.

PIPE CGULING,

APPLIOATIGN FILED AUG.13,1904.

Inventor ttomegs ivo. 793,80*?) GEORGE A.

.Patented :any a, ieee.

"frnivir einem iEriilifiAN, 0F INDEPENDENCE, (JOLORADC).

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SPECIFICATION forming' part of Letters Patent No. 793,807,

dated July et, 1905.

Application filed August 13, 1904. Serial No. 220,672.

Be it known that I, Gnoneu A. SEAMAN', a citizen of the United States, residing at Independence, in the county ot' Teller and State of Colorado, have invented a new and useful Pipe-Coupling, ot' which the following' is z specification.

This invention relates to animproved hosecoupling', and has for its object to provide a simple, inexpensive, and eiiicient device of this character by means oi' which two or more sections of hose may be conveniently and expeditiously coupled.

A `further object of the invention is to provide a coupling in which the use oi' screwthreads, locking-lugs, and similar fastening devices are entirely dispensed with, the adjacent sections otl hose or pipe being' quickly connected or disconnected by the movement of a cam-lever.

A still 'further object is to provide means for varying' the throw or longitudinal nievenient oi' the movable coupling' member so as to increase or diminish the clamping Iaction on the stationary member.

The invention consists in the constructioi'l and novel combination and arrangement oi'l parts hereinafter fully described, illustrated in the accompanying'drawings, and pointed out in the claims hereto appended, it being understood that various changes in iorm, proportion, and minor details ot construction maybe resorted to without departing' from the principle or sacrificing' any oll the advantages of this invention.

ln the accompanying' drawings, 'forming a part of this specilication, Figure l is a perspective View ot my improved hose or pipe coupling'. Fig'. 2 is a horizontal section of the same. F ig. 3 is a perspective view showing the coupling' detached. Fig. d: is a transverse sectional view. Fig. 5 is a detail perspective view of the removable cam member.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

rihe numerals 6 and 6 designate hose or pipe sections of the ordinary form and construction employed for conveying' water, steam, air, and othertiuids under pressure to distant points. Secured .in any suitable manner to the end oii the section 6' is a couplingtube 7, which constitutes the movable clamping member, and secured to the end of the section G is a similar tube 8, which forms the stationary clamping' member oi the coupling. The tube 7 is mounted ior longitudinal movement in a coupling sleeve or collar 9, said collar being' provided with a peripheral recess 10, deh'ning op;)ositely-disposed annular Vflanges 1l and 12. The i'lange 1.2 is cutaway, as indicated at .13, and provided with an annular recess or socket la, which forms a seat tor the coupling-head 15 of the tube or stationary member 8. rl`he side walls oi the sleeve or collar 9 are provided with oppositely-disposed grooves or channels le, adapted to receive guiding' pins orlug's .17, secured to or formed integral with the tube or movable member 7. The member 7 is adjusted longitudinally within the sleeve or collar by means oit' a hand-operated lever 1S, the end ot' which is bifurcated to form a pair of parallel arms 12),' provided with terminal cams 20. The cams 2O i'it within the peripheral recess of the coupling sleeve or collar and have their inner faces provided with a series oil recesses or pockets 21, adapted to receive the pins or lugs or the movable member 7, so that when the operati ng-lever is swung'outwardly to the l'iosition shown in Fig'. 3 the terminal cams will engage the shoulders 22 and retract the tube or movable member 7, and thereby release the adjacent section of pipe or hose. One oi the parallel arms 119 is preferably detachably secured to the operating-lever, as by a bolt 23, so as to permit said arm to be removed when adjusting' the cams to vary the throw or longitudinal movement ol'l the movable clamping member.

To connect two sections ol. pipe or tube, the oliieratingdever is swung outwardly, as shown in Fig. 3, thereby drztwing' the end ci" the movable member within the couplingsleeve or collar. The coupling-head l5 oi: the stationary section 8 is then seated in the recess or socket 14 and thelcverli depressed or thrown down on the section 6', thereby forcing' the movable mem ber in engagement with the head l5 and the latte against the wall oit the re- [CIO cess 14, as clearly shown in Fig. l of the l drawings.

The throw or longitudinal movement of the movable clamping member may be varied to accommodate coupling heads of diii'erent thicknesses by detaching the removable arm of the operating-lever and introducing' the pins or lugs in the corresponding pockets of the terminal cams, as will be readily understood.

rL he coupling is provided with the usual gaskets or Washers to form an air or water tight joint between the several sections, and, if desired, the parallel arms oi' the operatinglever may be made oi' spring metal, so as to yield slightly and permit the adjustment of the cams Without the necessity of detaching the arm of said lever.

From the foregoing it will be seen that the improved coupling permits of aquick attachment or detachment ot' pipe-sections and is particularly adapted for use on lire-hose and the like.

Having thus described the invention, is claimed ism l. A pipe-coupling comprising stationary and movable clamping members, a sleeve or collar surrounding the movable member and provided with an annular recess defining oppositely-disposed shoulders, the walls oi' said recess being provided With longitudinal slots, lugs or pins projecting laterally from the movwhat able member and extending through said slots, and cams seated in said annular recess and engaging the pins, said cams being adapted to engage the shoulders for actuating the movable clamping member.

2. A pipe-coupling comprising stationary and movable clamping members, a sleeve or collar surrounding the movable member and l provided with oppositely-disposed slots, a cam having its inner face provided with a series of pockets, and pins or lugs carried by the movable member and extending through said longitudinal slots for engagement with the pockets to thereby vary the throw of said movable member.

3. A pipe-coupling comprising stationary and movable clamping members, a sleeve or collar surrounding the movable member and provided with aterminal socket forming a seat for both members, said sleeve being provided with oppositely-disposed longitudinal slots, a cam having its inner face provided with a marginal row of pockets, and pins or lugs carried by the movable member and extending through. said longitudinal slots for engagement with the pockets to thereby vary the throw of said movable member.

4. A pipe-coupling comprising stationary and movable clamping members, a sleeve or collar surrounding the movable member and provided with an annular recess and oppositely-disposed longitudinal slots, an operating-lever provided with spaced terminal cams one of which is detachably secured to the lever, and pins or lugs carried by the movable member and extending through said slots for engagement with the cams, there being a series of marginal pockets formed in the inner faces of the cams for varying the throw of the movable member.

ln testimony that 1 claim the foregoing as my own I have hereto aiiixed my signature in the presence of two witnesses.

GEORGE A. SEAMAN.

Vitnesses:

-ALBERT BENORE,

HIRAM O. TURNER. 

